Mach-Speed - MS-31001 - 2007-2013 Chevy Silverado C/K 1500/2500/3500 Rear Window Louver A Korad film surface on the ABS louvers for UV protection and a slightly glossier finish and can be painted. Stainless steel mounting brackets have a black-oxide coating to match the louvers with 3Ms VHB A four-color&#44; eight page&#44; easy-to-read owners installation instruction manual with step-by-step Meets the standard of excellence. Latest Technical Development.